Production of ultrahigh purity copper using waste copper nitrate solution

被引：32

作者：

Choi, JY ^{[1
]}

Kim, DS ^{[1
]}

机构：

[1] Ewha Womans Univ, Dept Environm Sci & Engn, Seoul 120750, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2003年 / 99卷 / 02期

关键词：

highly pure copper; electrolysis; waste etching solution; electrowinning; cementation barrier;

D O I：

10.1016/S0304-3894(02)00312-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The production of ultrabigh purity copper (99.9999%) by electrolysis in the presence of a cementation barrier has been attempted employing a waste nitric copper etching solution as the electrolyte. The amount of copper deposited on the cathode increased almost linearly with electrolysis time and the purity of copper was observed to increase as the electrolyte concentration was increased. At some point, however, as the electrolyte concentration increased, the purity of copper decreased slightly. As the total surface area of cementation barrier increased, the purity of product increased. The electrolyte temperature should be maintained below 35 degreesC in the range of investigated electrolysis conditions to obtain the ultrahigh purity copper. Considering that several industrial waste solutions contain valuable metallic components the result of present study may support a claim that electrowinning is a very desirable process for their treatment and recovery. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：147 / 158

页数：12

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